Yaba said several times that potions are not supposed to be burnable / tradeable.
Some players just do "private deals" when one player open packs belonging to another player, using potions that he wants to get rid of. But yeah, this requires a bit of trust ;-)
I opened a pack of Dice for someone in the discord channel. I would be happy to do that for anyone. I did it for free and will continue to do it for free.